速腾和福克斯后悬挂对比

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速腾和福克斯是A级车中的两大竞争车型，其中一个卖点就是都采用了独立的后悬挂。速腾的叫“多连杆后悬挂”，福克斯的叫“SLAControlBlade后悬挂”。经过对比，发现两个悬挂有很多相似之处。FordControlBladeSuspensionAlotofattentionandmarketinghasbeencomingoutofFordrecentlyabouttheirnewControlBlade™rearsuspension.DetailsandengineeringfactsarepredictablysketchybuttheglossymarketingbrochureswilltellyouthisrevolutioninrearsuspensionwillmakeyourFordFocushandlebetter,griptheroadbetter,andbrakebetterthaneverythingelseontheroad.Itwarrantssomeinvestigationwhentheymakeclaimslikethat,butitturnsoutwhattheymeanis"we'vegotanewsuspensionsystem",andnotmuchelse.Itactuallystartedoutitslifesometimearound1998inFordofAustraliaandIbelieveHoldenhadsomethingtodowithittoo.Sincethenitsbecomefarmoremainstream.So"ControlBlade"isthesnappymarketingnamethatFordusetodescribetheirnewsystem.Itsoundsgood,looksgoodonpaper,andhasanauraof21stcentury-nessaboutit."Blade".Ooh.Cool.Therealityisn'tquitesocoolthough-controlbladeisbasicallyanevolutionoftrailing-armsuspension.HoweveritsstillaninterestingdevelopmentanditdoesservethepurposeforwhichForddesignedit.TheprimarypurposeofControlBladesuspensionistoincreasetheinteriorspaceavailableinthevehicle.Mostsuspensionsystemsusedindailydrivershavestruttowersfrontandrear.Inthefrontit'snotreallyaproblem,butintherearitimpedesonboot(ortrunk)space.Fordwantedtogivemorespaceinthebackandneededtofindagoodwaytoremoveorreducethesizeofthestruttowers.TheresultistheirControlBladesystemwhichinessenceseparatestheshockabsorberfromthesprings.Todothis,Fordneededtouseatrailing-armtypesuspensionsothattheydidn'thaveswingarmsupunderthewheelarches.Thespringswereshortenedandmovedinboardandunderneath.Inonevariation,theshockabsorbersstillsitverticallybutthespacetheytakeupnowishugelyreducedbecausetheynolongerhavethecoilspringsaroundtheoutside.Inthesecondvariationtheshockabsorberisasubminiatureunitmountedinboardofthespringsunderneaththevehicle.I'mnotsureofthemeritsofthesuper-shortshockabsorberbutFordseemtothinkitworks.Thecontrolbladesthemselvesarebasicallythetrailingarmswhichgivelateralsupportandprovidetheverticalpivotpointfortheentireunit.TheFordspielsaysthisaboutControlBlade："Ithasthekeyfunctionofpromotingrideandreducingroadnoisetransmission,whileprovidingthefreedomtoletthelaterallinksdefinetoeandcamberbyabsorbinganyrearwardforcesandallowingtherestofthesuspensiontodoit'sjobuninterrupted.EffectivelyisolatingthehandlingcomponentsofthenewIRSfromtheroadnoiseandimpactharshnesscomponentsofthesuspension.".InEnglish?Itmeansbetterhandlingandlessroadnoise.Lookingatthebasicdesignit'snotdifficulttoseethatthissystemhasamuchlowercentreofgravitythanaMacphersonstrut(forexample).LowerC-of-Ginavehicleisalwaysagoodthing.ThegeometryoftheControlBladesystemalsoprovidessignificant'anti-dive'underbrakingforce,whichmeansathecarbodywilldivelesswhenyoujumponthebrakeswhichinturntranslatesintomorewell-behavedbrakingresponse.LowerC-of-G,lessrollandlesspitchduringbrakingalladduptobetterhandling,althouthwhethertheaveragedriverwouldnoticeornotisadifferentmatter.Anotherfunctionofthissystemisthatthey'veseparatedthetwobasicfunctionsofsuspension.Withthespringsandshockabsorbersbeingmountedindifferentplaces,Fordhavemanagedtooptimisethefunctionofthesecomponents.It'ssimilarinconcepttowhatBMWdidwiththeteleleverfrontsuspensiononmotorbikes-separatingbrakingfromsuspensionforces,onlyinthecontrolbladesystem,itseparatesthespringingsupportofthesuspensionfromtheshockreducingfunctionsoftheshockabsorbers.而几乎相同的设计，大众却把这套悬挂系统叫做“四连杆独立悬挂”。大众的官方说明：紧凑的四连杆后悬架结构是PQ35平台底盘系统最大的变化之处，改变了PQ34平台上的半独立扭杆梁式（目前很多大众车也在用这个），而以中高档轿车上采用的独立式四连杆代替，大大提高整车的舒适性和操控性。四连杆后桥由以下部分组成：三个摆臂(下摆/弹簧臂8,横拉杆7,上摆臂6)和一个纵向拖臂4组成(看图对号入座)，每个车轮有一个横拉杆，能独立区分纵向和横向的动力传递，在与前悬架完美配合下，使整车具有良好的平稳性和驾驶舒适性。后悬架不但保持着德国车的一贯硬朗，又兼具了良好的乘坐舒适性。悬架几何结构可产生中性或略带不足转向，有利于转向稳定。

回答者：wlb2116142016-03-14 00:00